Calvery Arms polymer lower

Has anyone used the Calv Arms CAV-15 MKII lower receiver? It is a glass-filled nylon 6 polmyer receiver that has the stock (A2 design) and pistol grip attached. Fully compatable with MIL-SPEC parts. It retails from Brownells for $150.00, but needs lower parts kit and buffer and spring.

I would not use it with any upper over .223, but seems like it would make a cheap truck gun.

As you may be aware, we have been engaged in an ongoing dispute with the ATF for the past two years. While Cavalry Arms has at all times tried its best to run a lawful and honest shop, unfortunately, some regulatory compliance mistakes were made. We have now come to the point where we feel it is in our best interest to close our FFL and to cease all firearms operations.

"Government is not the solution to our problem, government is the problem" Ronald Reagan

I've got a couple(one black, one fde) with a few hundred rounds thru each. So far, so good. I like the versatility of the magwells, thinking of buying a .45acp and .22 uppers to use on these too. Currently have one as .223 and the other 9mm.
The info I have is that Calvary Arms is out-of-business but another company was looking at picking up their tooling to produce the line under new management, nothing firm yet. I guess if anyone has a source and is interested in the CavArms lowers, you should get it while the gettin is good.